Testing and Debugging Microsoft SharePoint Applications with Microsoft Visual Studio 2012Benjamin Day &Brian Randell

DEV-B332

Who are these guys?

Benjamin Day• Brookline, MA• Consultant, Coach, & Trainer• Microsoft MVP for Visual Studio ALM• Team Foundation Server, Software Testing,

Scrum, Software Architecture• Scrum.org Classes• Professional Scrum Developer (PSD)• Professional Scrum Foundations (PSF)

• www.benday.com, benday@benday.com, @benday

Brian A. Randell• Partner with MCW Technologies• Microsoft MVP for Visual Studio ALM• Member of Pluralsight’s Technical Staff

brianr@mcwtech.com | @brianrandell | www.mcwtech.com/blogs/brianr

Here’s the mission.

Show you the testing & debuggingfeatures in

Visual Studio 2012.

Apply the Visual Studio 2012 testing features to your

SharePoint code.

Show you why you should care.

Debug stuff.

The testing features.• Test the ‘guts’ with

Unit Tests & the VS Fakes Framework

• Test a user interface with Coded UI Tests

• Find performance problems with Load Tests

Debugging features.• IntelliTrace

• IntelliTrace

• IntelliTrace

What’s a unit test?

It’s code-based proof that your stuff works.

Small chunks of code that run and validate small chunks of code in

your app.

Small chunk = unit test

Lots of small chunks = the test suite.

Automated.

Should run fast.

Should not get in your way.

If something in your automated test suite is failing…

…your app is broken.

Unit tests are automated debugging.

“Now what does this have to do with an airplane bathroom?”

How would you test this?

Anything that makes it hard to test causes…

…testing friction.

The Microsoft Fakes Frameworkhelps you to minimize

testing friction.

The Microsoft Fakes Framework• Unit test in isolation• Use delegates & lambda expressions• Shims• (Magic)• Substitute hard-coded types with *something else* at runtime

• Stubs• Helps if you’re interface-driven• Creates default() implementations of an interface • including properties & methods

Fakes & Unit Tests withSharePoint

Sweet.

“What if it doesn’t go as smoothly as

your demo?”

Debugging.

Actually, have you looked atthe debugging features lately?

(Ben hadn’t.)

There’s a lot more than just watch windows, breakpoints,

and F11.

Breakpoint labeling.

Import & Export Breakpoints.

Conditional breakpoints.

Breakpoint hit counts.

Pinnable data tips.

Import & export data tips.

And then there’s the 800 lb. gorilla of debugging in Visual Studio

2012…

IntelliTrace

IntelliTrace®

… because

F11 can start to suck

IntelliTrace serves you …

2ways

live debugging

historical debugging

With SharePoint, you can do both.

IntelliTrace captures debugger state information during program execution.

It’s all about eliminating the“no repro” scenario.

IntelliTrace collects:IntelliTrace Events

Method entry/exit callsBreakpoints

IntelliTrace live debugging supports two modes:Events only

Events and Methods

IntelliTrace• A feature of Visual Studio Ultimate• Visual Studio 2010 provides live debugging and historical debugging

(from test)• Visual Studio 2012 adds historical debugging (from production)

• Supports managed code only• Visual Basic and Visual C# version 2.0 and higher

• Visual Studio 2012 Update 2 provides enhanced support specific to SharePoint 2010 and 2013

Live Debugging withIntelliTrace

Awesome.

So we’ve got tests for the innards.

What about the user interface?

“Gimme something for the tedium.”

Coded UI Tests.

Unit Tests vs. Coded UI Tests

• Tests at the API level• If it tests a UI, it’s testing an abstraction.• (not quite testing the UI)• UI testing has been hard

• Test stuff as you build it

• UI testing• Test a running application• Simulates a user’s keyboard and mouse activities• Test stuff that’s pretty much done• Integration testing

Unit Tests Coded UI Tests

Unit tests test your APIs.

Coded UI Tests test your running user interfaces.

Coded UI withSharePoint

Wickid.

“But what if it’s slow?”

“Our company is toast ifour SharePoint app is slow.”

Load Testing.

The Purpose of Load Testing

• Identify the capabilities of your application

• Possible goals• Explore• Verify • Find the limits• Crush

The Obligatory “Eat Your Vegetables” Slide.• Load test throughout the development cycle.

• Catch problems early• Establish performance baseline• Watch for performance trends

• Cheaper to fix early

• Plan for performance

Best Practice

Cheaper to Fix Early

Graph courtesy of May-Dupp Info, LLC

Early Less Early Nearly Done Production0

10

20

30

40

50

60

Time

Cost

to fi

x

Dose Of Reality

• You know you should work that way.• You probably don’t.

• You have problems.• How do you figure out what’s going

wrong?

What is a Web Performance Test?• Test type in Visual Studio 2012 Ultimate

• Exist in a Web Performance and Load Test project

• Collection of HTTP requests

• Simulates a user using an ASP.NET (or other web) application

• Building block of Load Tests

Load Tests• Made up of…• ...Web Performance Tests• …Unit Tests

• Simulates lots of users hitting your app

Two ways to run load tests.

• Generate load from Visual Studio 2012• Load from a single machine

• Generate load from a Test Rig• Load from many machines• Far better test• Simulate lots more users

Load Test Rig & The Application

• Controller• Orchestrates• Licensing• PerfMon Counters

• Agent (1..n)• Simulates users

Controller

Agent 1

SharePoint

Database

Agent 2

Agent n

Coordinates & Gathers Information

Generates Load

Application Under Test

Load Testing aSharePoint app

Nice

We’re almost done.

Remember earlier, we showed you IntelliTrace?

Wouldn’t it be cool if you could use that with your production sites?

You can.

IntelliTrace in Production• Free to collect• Download “xcopyable” package• Activate via command-line, PowerShell, whatever• Run app• Collect logs

• Analyze with Visual Studio 2012 Ultimate• Visual Studio 2012 Update 2 provides

enhanced support specific to SharePoint 2010 and 2013

historical debugging withIntelliTrace

In summary.

Unit testing.

The Fakes Framework.

IntelliTrace.

Coded UI Tests.

Load Testing.

Thank you.

www.mcwtech.com www.benday.com

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